Re: [Vo]:Question about Coulomb Barrier

2011-05-13 Thread mixent
In reply to Jones Beene's message of Tue, 10 May 2011 15:07:19 -0700: Hi, [snip] From http://atom.kaeri.re.kr/cgi-bin/nuclide?nuc=Ni-62n=2 one can see that the cross section for neutron absorption by Ni62 at thermal energies (~ 2E-8 MeV) is about 14 barn. Dividing this into the atomic volume of

RE: [Vo]:Question about Coulomb Barrier

2011-05-13 Thread Jones Beene
-Original Message- From: mix...@bigpond.com One can see that the cross section for neutron absorption by Ni62 at thermal energies (~ 2E-8 MeV) is about 14 barn. Yes of course - that is a thermal neutron - which changes everything. There is no thermalization mechanism in this reactor

Re: [Vo]:Question about Coulomb Barrier

2011-05-13 Thread mixent
In reply to Jones Beene's message of Fri, 13 May 2011 18:05:59 -0700: Hi, [snip] -Original Message- From: mix...@bigpond.com One can see that the cross section for neutron absorption by Ni62 at thermal energies (~ 2E-8 MeV) is about 14 barn. Yes of course - that is a thermal neutron

RE: [Vo]:Question about Coulomb Barrier

2011-05-10 Thread Jones Beene
Craig, I don't if this helps, but most metals tend to be relatively transparent to neutrons, due to the scattering cross-section which is caused by spin, not by anything related to charge. The Coulomb barrier is not involved AFIK with neutrons. A few metals like cadmium will absorb neutrons

RE: [Vo]:Question about Coulomb Barrier

2011-05-10 Thread Mark Iverson
-Original Message- From: Jones Beene [mailto:jone...@pacbell.net] Sent: Tuesday, May 10, 2011 3:07 PM To: vortex-l@eskimo.com Subject: RE: [Vo]:Question about Coulomb Barrier Craig, I don't if this helps, but most metals tend to be relatively transparent to neutrons, due to the scattering cross